Striking the big prize

Nobita's mother complains to his father about wasting money on lottery tickets. Nobita decides to use the time machine to win some money on the lottery. The tickets are printed out with a number and Nobita has no money to buy a ticket but sees his father buy a ticket worth 300,000,000 yen. The family are planning what to do with the money only to find out his father has taken his mother's moan seriously and sold the ticket to someone else.